package com.xiaolun;

/**
 * @Author 硕鼠
 * @Date 2020/5/10 17:24
 * @Version 1.0
 * @Description 不安全的取钱
 */
public class UnsafeBank {
    public static void main(String[] args) {
        //账户
        Account account = new Account(100, "结婚基金");

        Drawing you = new Drawing(account, 50, "你");
        Drawing girlfriend = new Drawing(account, 100, "girlfriend");

        you.start();
        girlfriend.start();
    }
}

//账户
class Account{
    int money; //余额
    String name;//卡名

    public Account(int money, String name) {
        this.money = money;
        this.name = name;
    }
}

//银行，模拟取款
class Drawing extends Thread{

    Account account; //账户
    int drawingMoney; //取了多少钱
    int nowMoney; //现在手里还剩多少钱

    public Drawing(Account account,int drawingMoney,String name){
        super(name);
        this.account = account;
        this.drawingMoney = drawingMoney;
    }

    //取钱
    @Override //synchronized在这里锁不住银行这个对象
    public void run() {

        synchronized (account){ //锁的是账户
            //判断有没有钱
            if (account.money -drawingMoney < 0){
                System.out.println(Thread.currentThread().getName()+"钱不够，取不了");
                return;
            }

            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }

            //卡内余额=余额-你取的钱
            account.money = account.money - drawingMoney;
            //你手里的钱
            nowMoney = nowMoney+drawingMoney;

            System.out.println(account.name +"余额："+ account.money);
//        Thread.currentThread().getName() = this.getName()
            System.out.println(this.getName() +"手里的钱："+ nowMoney);
        }
    }
}